DAVID T. PERKINS is co-author of Using SNMP MIBs and an active member since 1989 of the Internet Engineering Task Force (IETF), which created SNMP-based network management and RMON standards.. He has worked for 3Com, Bay Networks, and BMC Software, and runs his own consulting firm, SNMPinfo, in the Santa Clara, CA area (http://www.snmpinfo.com).